Avengers: Doomsday is a 2026 Marvel Cinematic Universe (MCU) film scheduled for release on December 18, 2026, directed by the Russo brothers, and written by Stephen McFeely and Michael Waldron, featuring a large ensemble cast including Robert Downey Jr. as Doctor Doom, Chris Hemsworth as Thor, and Anthony Mackie as Captain America, with production having taken place in 2025. The film is part of MCU's Phase Six and follows Avengers: The Kang Dynasty, with plot details kept under wraps, though it's expected to be a major event film following the Infinity Saga.